Norin is graduate from the Ecole Nationale Vétérinaire d’Alfort, in 1994. In 1995, he completed two Master of Science, one in «Tropical animal pathology» and one in “Tropical Animal Production”. In 1996, he finished his doctorate in Veterinary Medicine with the highest level of distinction and the examining board's utmost praise on “Ecology and Ethology of the Leopard (Panthera pardus)”. Meanwhile, he started his career with the position of director of the National Park of Manda (Chad) from 1995 to 1996.
In 1997, he entered the National Museum of Natural History (France) as a research Engineer and as the deputy director of the Parc de la Haute Touche (zoological park in the center of France). In 2000, he moved back to Paris as a field vet in the Menagerie du Jardin des Plantes. From 2005 until now, he is the head veterinarian and the deputy director of the Ménagerie.
Norin Chai is the founder and president of Yaboumba, a NGO dedicated to Conservation and Wildlife Rescue. This NGO has recently built a wildlife rescue center in Sumatra. He is also president of a public official diagnostic laboratory. Due to his expertise, Dr. Chai is regularly consulted on wildlife medical cases and conservation projects around the world. He has published numerous articles in veterinary journals, national magazines, and given more than hundred lectures in national and international congresses.